Exhumation is the act of digging up something buried, especially a dead body. This is a legal procedure.
Step 1: Understand the roles.
(1, 2, 4) District Magistrate, Sub Divisional Magistrate, Judicial Magistrate: These are executive or judicial officers who have the legal authority to order and oversee an exhumation as part of a criminal investigation. Their presence ensures the legality and proper conduct of the procedure.
(3) Advocate General: The Advocate General is the highest law officer of a state government. Their role is to provide legal advice to the government and represent it in court. They are not directly involved in the procedural aspects of a criminal investigation like ordering or supervising an exhumation at a crime scene.
Step 2: Conclude. Based on the roles, the Advocate General is not associated with the on-site process of exhumation.